待改进-开头就输入两个换行符会退出程序
#include<stdio.h>
char get_first(void);
int main()
{
int a;
a=get_first();
printf("%c",a);
}
char get_first(void)
{
char ch;
while((ch=getchar())!='\n')
{if(isspace(ch))
continue;
else
break;}
while(getchar()!='\n')
continue;
return ch;
}